Historical Change of Population Abundances of Panonychus ulmi and Tetranychus urticae (Acari: Tetranychidae) in Selected Apple Orchards in Suwon and Its Hypothetical Explanation
2005
Kim, D.S. (Cheju National University, Jeju, Republic of Korea), E-mail: [email protected] | Lee, J.H. (Seoul National University, Seoul, Republic of Korea)
Historical changes of population abundances of European red mite (ERM), Panonychus ulmi (Koch), and two-spotted spider mite (TSSM), Tetranychus urticae (Koch) (Acari: Tetranychidae), were described in selected apple orchards in the National Horticultural Research Institute (NHRI, Suwon, Korea), based on research reports of the NHRI from 1958 to 1998. ERM was an abundant species up to 1970, and TSSM became a dominant species after 1980. The change occurred around mid 1970.
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